Machinery for upsetting the edges of rolled-metal plates.



' w/ T/VESS E G. J. HOSKINS.

MACHINERY FOE UPSETTING THE EDGES 0P ROLLED METAL PLATES.

APPLIOATIOLI IILED JAN. 29, 1908.

917,765. A Patented Apr. 13, 1909.

2 SHEETS-SHEET 1.

rue NORRIS PETERS ca., WASHINGYON, n. c.

e J. HOSKINS. MACHINERY FOR UPSETTING THE EDGBSOP ROLLED METAL PLATES.

I APPLIOATION FILED JAN. [9,1908. 9 1 7,765 Patented Apr. 13; 1909.

2 $HEETSSHEET 2. .7

T ng UNITED snares PATENT GEORGE JOHN HOSKINS, OF BURWOOD, NEAR SYDNEY,NEW SOUTH WALES, AUSTRALIA.

MACHINERY FOR UPSETTING- THE EDGES 0F RCLLED-METAL PLATES.

Specification of Letters Patent.

Patented April 13, 1909.

Application filed January 29, 1908. Serial No. 413,257.

To all whom it may concern:

Be it known that I, GEORGE JonN Hos- KINS, a subject of the King ofGreat Britain, residing at St. Cloud, Burwood Road, Burwood, near thecity of Sydney, in the county of Cumberland, State of New South )Vales,Commonwealth of Australia, have invented certain new and usefulImprovements in Machinery for Upsetting the Edges of Rolled-MetalPlates, of which the following is a specification.

This apparatus has been devised for the purpose of upsetting the edgesof rolled metal plates with a view to make such edges of dovetail form,(in section) and the invention is specially applicable to thepreparation of the iron or steel plates that are used in the manufactureof wrought iron or steel pipes of the locking-bar type.

The invention comprises three elements, (1) an adjustable clamp andguide for the plates, (2) rotating hammers that strike the two edges ofthe plate as it is being passed through the machine, and (3) a sizingand polishing a pliance that trims and polishes the dovetai ed edgesbefore the plate leaves the machine. But in order that the invention maybe properly understood, reference is made to the accompanying sheets ofdrawings, in which,

Figure 1 is a plan of the machine, one side being partly in section.Fig. 2 is a side elevation of the same. Fig. 3 is an end elevation ofthe same, one of the pillars that contains one of the rotating hammers,being partly in section, and the sizing appliance is removed. Fig. 4c isa detail showing, in plan, the adjustable clamp and guide for the plate.Fig. 5 is an end view of the same, the gripping device being omitted,and Fig. 6 is a sectional elevation of the sizing and polishingappliance.

A is the bed plate of the machine from which rise two towers or pillarsB, B these towers are adjustable laterally by means of a right and lefthanded screw C that is worked by a winch handle C operating spur gear CThe towers B, B move laterally in guides 7), 6 The clamps and guides D,D are secured to the towers by means of bows d, d and bolts d andtherefore when the towers are moved laterally, the clamping devices willmove with them. The reason why the towers and clamping devices aresusceptible of lateral movement is that the machine may be adapted todifferent widths of plates.

The side of each tower nearest the longitudinal axis of the machine iscut away, so as to permit of the passage of the plate E, and of theimpact of the hammers upon the edges of the plate. The clamping andguiding devices D, D, which are formed of blocks, are secured one oneither side of the longitudinal axis of the machine and in front of thecut away parts of the towers. These clamping blocks will rest upontables b that project from the inner faces of the towers. Each clampingdevice consists of two clamping blocks, one above the other, betweenwhich the plate E will be laid and loosely secured (so that the plate Ecan freely slide forward) by the set screws d. The edges of eachclamping block D, D most adjacent to the rotating hammers, are curvedinward in arcs c that are concentric with the aXes of the hammers, andthese curves perform a most important function.

In Fig. 4 it will be seen that the corners of the edges of the plate Ejust project beyond the arcs e of the blocks D, D the dotted circleswith the arrows represent the peripheral line and direction of rotationof the hammers; as the hammers strike the corners and the edges of theplate, the edges will be progressively and continuously upset by theimpact of the hammers, without the exercise of any great force beyondthe force inherent in the velocity of the hammers, and the edges of theplate will be forced back against the faces of the blocks D, D formingan upset of dovetail form. The hammers are secured on vertical shafts F,F axially centered in the towers B, E the vertical shafts are preferablymade tapering and the bosses of the hammers are secured thereon bycotters f (see Fig. 3). Each hammer is constructed of a top and bottomplate G, G, of any suit able shape, (but preferably oval) and, centerednear the ends of the plates G, G, are heavy rollers g, g, whichconstitute the striking surfaces of the hammers. There may be one ormore of such roller strikers, but two, as shown in the drawings, hasbeen found to give the most satisfactory results. The vertical shafts F,F, are continued above the tops of the towers, are bushed in longbearings H, H and are provided with pulleys J, J to receive the belts j,which connect the machine with any suitably placed power shaft such asK. The plate is pulled through the machine by any suitable appliance. Wehave found from experience that it is best to haul it through by anysuitable hauling gear. To that end the end of the plate I is gripped bya jaw such, that the harder the strain on the hauling rope the tighterthe grip. The jaw L is shown in Figs. 1, 2 and 4, and the plate '13 iswedged into it by the wedge Z.

hen the edges of the plate have been upset into the dovetail form, bythe combined operation of the clamps D, D and the hammer-strikers g, g,the plate will reach the sizing and finishing appliance shown in Figs. 1and 6. This device includes upper and lower pairs of rollers M, Mrespectively, between which the plate E will pass; the function of theserollers is to prevent the plate from buckling when the pressure of thesizing and polishing rollers N, N is felt. The rollers M, M are looseupon their respective shafts m, m so that they serve as antifrictionrollers. Intermediate between the shafts m, m are the sizing rollers N,N on vertical axes. The sizing rollers N, N are carried by plungers n, nwhich are capable of a limited longitudinal lateral movement in theframe, the object of which will be more fully described hereafter. Thesizing rollers N, N are made with a central groove of nearly suflicientsize to admit the dovetails that have been formed on the edges of theplate. The rollers N, N, are loose on their axes. As the late is hauledalong, the top and bottom e ges of the dovetail will be scraped againstthe top and bottom faces of the grooves in the rollers N, N, and anyburs, superficial inequalities or slight differences in the width of theplate at different points will be scraped off. This apparatus is selfadjusting. The shafts m, m are connected together at each end bycross-heads O, O and in the center of each cross head is a boss, or stud0, 0 that projects inward and bears against the external ends of theplungers n, n that carry the rollers N, or N Should one side of theplate be not quite parallel with the other side, the sizing rollers willreduce or eliminate the inequality and this will be rendered possible bythe accommodating nature of the structure of the machine. Thus, the topand bottom shafts m, m being braced together by the cross-heads 0, 0 thewhole will move in the frame and slide as one, the studs or projections0, 0 will bear against the ends of the plungers a, n, and the whole willbe shifted to one side or the other exactly equally, and this actionwill continue until the edges of the whole plate have been treated asdescribed.

It may be pointed out that the plates of different thicknesses require alateral adjustment of the clamping devices D, D To that end the bows,(Z, (Z are provided with adjusting screws I, P whereby the clampingdevices I), I) may be moved in or out as desired. The necessity for thisadjustment arises from the fact that a thin plate requires morehammering than a thick plate, in order that, relatively, a greater bodymay be given to the dovetail on thin plates.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is:

I. A machine for upsetting the edges of rolled metal plates comprising apair of guiding blocks for each edge of a plate, the passes between eachpair of blocks being in alinement, each pair of said blocks having aportion of the outer edge recessed and a portion projecting outwardly, aportion connecting the recessed portion with the projecting portion andcorresponding in form with the cooperating part of the hammer, andhammers arranged in cooperative relationship with the blocks and in suchposition that they can operate upon opposite sides of the same portionof a plate.

2. A machine for upsetting the edges of rolled metal plates comprising apair of guiding blocks for each edge of a plate, the passes between eachpair of blocks being in alinement, each pair of said blocks having aportion of the outer edge recessed and a portion projecting outwardly, acurved portion connecting the recessed portion with the projectingportion, and rotating hammers arranged in cooperative relationship withthe blocks and in such position that they can operate upon oppositeedges of the same portion of the plate, said curved portion of theblocks being concentric with the circular path traveled by the hammers.

3. In a machine of the class described, a pair of guiding blocks foreach edge of a plate, the passes of the guide blocks being in alinement,means for adjusting the pairs of blocks toward and from each other,hammers arranged in cooperative relationship with the blocks and in suchposition that they can operate upon opposite edges of the same portionof a plate, and means for operating the hammers.

4. In a machine of the class described, a pair of towers, means foradjusting said towers toward and from each other, a pair of guidingblocks carried by each tower, the passes between the guiding blocksbeing in alinement, and rotating hammers carried by each tower andarranged to operate on a work piece as it is passed between the guideblocks.

5. In a machine of the class described, a pair of towers, means foradjusting said towers toward and from each other, a pair of guidingblocks carried by each of said towers, the passes between the blocksbeing in alinement, means for adjusting the blocks I to the right or tothe left, substantially as deon the tower so as to regulate the spacebetween the two pairs of blocks, and hammers carried by the towers andarranged to opcrate on a work piece as it is passed. between the guideblocks.

6. In a machine of the class described, a pair of towers, horizontallyrotating ha1n mers in each tower, said towers having recesses in theiradjacent faces, a pair of guiding blocks in each recess, the passesbetween the blocks being in alinement, means for adjusting the distancebetween the pairs of blocks, and the rear side of each pair of blockshaving a curved recess therein concentric with the path of the revolvinghammers and in horizontal alinement therewith.

7. In a machine of the class described, a sizing and polishing applianceconsisting of two horizontal shafts mounted so as to permit of freelongitudinal movement in the line of the axes, antifriction rollerssupported on said shafts, the said antifriction rollers receiving theplate between them, cross heads connecting the horizontal shaftstogether, grooved rollers having the grooves therein on a line with thespace between the antifriction rollers, vertical axles for said roovedrollers, horizontally movable members carrying said axles and studs onthe cross heads adapted to engage with said movable members whereby thewhole structure is moved scribed.

In a machine of the class described, a pair of towers, means for movingsaid towers toward and from each other, a pair of guiding blocks on eachtower having their passes in alinement and adapted to guide a platehorizontally, hammers arranged in the towers adapted to operate on theedges of the plate as it is passed between the guides, a sizingappliance comprising a pair of grooved rollers having vertical axes, thegrooves in said rollers being in the same horizontal plane as the passesbetween the guiding blocks, the grooved portions of said rollers beingarranged to operate upon the edges of a plate as the plate leaves theguides, rollers M, M, located above and below the pass between thegrooved rollers, horizontal axles for said rollers M, Ed, said axlesbeing slidable in the direction of their axes and means for connectingthe axles of the rollers M, M, and the supports for the grooved rollerstogether so that all of said rollers may be moved laterally together.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

GEGRG-E JOHN HOSKINS. il itnesses MANFIELD NEWTON, VINCENT NEWTON.

